Inthemiddleofwinterw的精選

問題詳情：Inthemiddleofwinter,whensnowisfallinginmanypartsoftheUnitedStates,scientistshavesoundedawarningtopeoplewhoplantospendmanyhoursinthesunthissummer.Thewarning:Thesun’ssummertimeraysaremoredanger...